Jet Set Willy (ZX Spectrum)

Jet Set Willy
Developer: Software Projects Publisher: Software Projects Platform: ZX Spectrum Released in EU: 1984 This game has uncompiled source code. This game has unused enemies. This game has a hidden level select.

To do: There could be more, not much more though.

Jet Set Willy is the sequel to Manic Miner and is considered to be significantly more difficult than that game. This is not only because of the amplified difficulty, but also a handful of bugs that make the game unbeatable.

Level Select

As soon as you start the game, go down to The First Landing and position the player under the stairs. Then, type in WRITETYPER. If done correctly, pressing 9 should send the player to The Off Licence. Note the player should be careful, as the game will send the player to the room with the exact coordinates the player was at when the cheat was used. This can result in the player dying or getting stuck in an area. The player can go to any level by pressing 9 along with the 1-6 keys. Some examples of this include:

Additional Keys	Level
None	The Off Licence
1	The Bridge
2	Under The MegaTree
3	The Drive
4	Inside The MegaTree
5	We must perform a Quirkafleeg
6	Halfway up the East Wall
1 + 2	At the Foot of the MegaTree
1 + 3	The Security Guard
1 + 4	On a Branch Over the Drive
1 + 5	Up on the Battlements
1 + 6	The Bathroom
2 + 3	Entrance to Hades
2 + 4	The Front Door
2 + 5	On the Roof
2 + 6	Top Landing
3 + 4	Tree Top
3 + 5	Ballroom East
3 + 6	A bit of tree
4 + 5	West of Kitchen
4 + 6	Dr Jones will never believe this!
5 + 6	Nomen Luni

(Source: The Tip Shop)

Source Code

A very small piece of source code can seen at 1D81 in the .tap dump of the game.

    NZ,ENDPAUSE 
INC E
 JR NZ,PAUSE
INC D
 JR NZ,PAUSE
  C

Unused Guardian

A guardian that is hidden in the data of this game, but only its graphics are defined in memory at B100. It did eventually appear in Jet Set Willy II, inside 'Macaroni Ted'.

(Source: Richard Dymond)